Rotary drum pump



FIG. 1 is a perspective view of a rotary drum pump showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an alternate perspective view thereof showing my new design in an exemplary environment.

The broken lines showing of the pipe in FIG. 8 illustrate the environment of the claimed design and form no part of the claimed design. 

CLAIM The ornamental design for a rotary drum pump, as shown and described. 